Stand at... 'EASE'.
The 'At-Ease' position is a means to allow the individual to relax whilst on parade. However, he may not move from his position in line, nor is talking permitted unless permission has been previously given.
Position of 'ATTENTION'... from the 'AT-EASE'.
In order to move from the 'AT-EASE' to the position of 'ATTENTION', all that is required is to reverse the movements from 'ATTENTION' -to- 'AT-EASE'.